body{
    background-color: antiquewhite;
}
.header{
    text-align: center;
    font-size: 30px;
}
.box{
    margin: 0 auto;
    background-color: antiquewhite;
    border-radius: 30px;
    text-align: center;
}
.input{
    margin: 0 auto;
    display: block;
    height: 30px;
    margin-top: 45px;
    margin-bottom: 30px;
    border-radius: 8px;
    outline: none;
}
.input:focus{
    box-shadow: inset 0 0 2px 2px rgba(0, 0, 0,.3);
}
.b1{
    width: 80px;
    height: 30px;
    border-radius: 8px;
}